Using a two-period duopoly model with vertical differentiation, we show that there exists a unique subgame perfect equilibrium where the first entrant supplies a lower quality and gains higher profits than the second entrant. We also prove that this entry sequence is socially efficient.

Knowledge spillovers and labor mobility in industrial clusters are interrelated phenomena. A firm's knowledge is embodied in the entrepreneur and in the specialized workers. Knowledge can spill over from one firm to another through two channels: direct revelation from one entrepreneur to another...

We analyse a model of vertical differentiation focusing on the trade-off between entering early and exploiting monopoly power with a low quality, versus waiting and enjoying a dominant market position with a superior product. We show that, in a relevant parameter region, there exists a unique...

We consider a market for vertically differentiated goods where firms enter over time, after having developed innovations characterised by different quality levels. We show that patent height and length interact to determine the ultimate emergence of duopoly. In general, imposing quality...

We study the relationship between process and product innovations in vertically differentiated duopolies. A process innovation can lead two competing firms to improve the quality of their goods introducing a product innovation. In fact, a cost reducing innovation has two effects: it spurs...

Many couples do not sign prenuptial agreements, even though this often leads to costly and inefficient litigation in case of divorce. In this paper we show that strategic reasons may prevent agents from signing prenuptial agreements. Partners who value more the benefit of the marriage wish to...

In this paper, we prove that two firms may prefer not to include a termination clause in their partnership contract, thus inducing a costly termination in case of failure of the joint project. This ex-post inefficiency induces partners to exert large levels of non-contractible efforts...